. The American florist : a weekly journal for the trade. Floriculture; Florists. heat-pipe, attached to expansion-tank. H, tie to elevate presi • • - - ' The best way to secure this amount of steady, unchanging pressure, is by con- nection with a stand-pipe and elevated expansion tank. As every 2-1-ioth feet of water in a perpendicular column will give I lb. of pressure to the whole body below it, a stand-pipe 21 feet high will give a uniform pressure of 10 lbs. At the top of this water column attach a supply tank of sufficient capacity to con- tain one-tenth of all the water in the ra- diatin
. The American florist : a weekly journal for the trade. Floriculture; Florists. heat-pipe, attached to expansion-tank. H, tie to elevate presi • • - - ' The best way to secure this amount of steady, unchanging pressure, is by con- nection with a stand-pipe and elevated expansion tank. As every 2-1-ioth feet of water in a perpendicular column will give I lb. of pressure to the whole body below it, a stand-pipe 21 feet high will give a uniform pressure of 10 lbs. At the top of this water column attach a supply tank of sufficient capacity to con- tain one-tenth of all the water in the ra- diating pipes—in order to provide for expansion—and you will have a constant and regular pres,sure. To prevent a possibility of accumula- tion of air in the pipes, the. highest place should be above the boiler, with a gradual fall all the way back to the bottom of the heater. If it is impos- .sible to have the pipes thus located, and it is necessary to have dips and high places, supply such points with an air- chamber and small vent-cock to let the air off. But if from the high point above the boiler a half-inch vent-pipe extends to the top of the expansion-tank, this will Cutting Picks for Stemming. The cutting to suitable lengths of the large quantities of picks required in most floral stores where a great many designs are made up necessitates some little labor which has been saved and better work secured by a simple little device used by Frank Whitnall & Co., of Milwaukee, Wis. It consists of a vise so formed as to hold securely an entire box of picks which can then be sawn through the ; length of the box, cutting the picks to any desired length. The engraving shows the vise attached to a table by a thumb- j screw and holding a box of picks ready I for the saw. So much pressure may be. CVJ-^-(\HG> PVCI^S fOR STtViVf/vUrj take off all air that separates from the water in process of heating, and also pro- vide an outlet for steam, should the tem- perature of the water
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectfloriculture, bookyea
